Locust bean gum is extracted from the endosperm of the seeds of the carob tree Ceretonia siliqua, which grows in Mediterranean countries. The ancient Egyptians used locust bean gum to bind the wrapping of mummies. In more recent times is is used as a thickener in salad dressings, cosmetics, sauces, as an agent in ice cream that prevents ice crystals from forming, and as a fat substitute. source:sci-toys.com/ingredients/